The symptoms that you have described are consistent with acid peptic disease
and that is the reason why antacids have helped you. Since you are still symptomatic, ask the doctor to prescribe you stronger medicines like proton pump
inhibitors (omeprazole, pantoprazole
etc) which can give you further relief.
Also avoid fried and spicy foods. Avoid lying down for at least two hours after meals. If possible, take some exercise, like a brisk walk, regularly. Also consider quitting smoking or at least cut down on it because smoking worsens both gastritis and hypertension
Hope this helps. Best wishes.